Symptom; Console Cannot Make Or Receive Calls (No Ovd Message) - Nortel Meridian 1 Planning, Installation And Operating Instructions

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Symptom:

Console cannot make or receive calls (no OVD message)

Possible cause
No power to console
Defective console
Console connected to
wrong TNs
Defective wiring
553-3121-210 Standard 3.0
Chapter 25 — Fault locating and clearing
The attendant console cannot make or receive calls. There is no OVD
message. There may be other system messages indicating the TN for this
console is defective or has been disabled. Look up all system messages in the
Option 11C Compact software guide and follow the instructions given. If the
fault does not clear, use this procedure.
Constantly observe and look up messages as you perform this procedure.
Action
Check the power supply and wiring to see that the console is
powered up.
If there is a power supply problem, correct it.
If there is no power problem, go to the next possible cause.
Test the console by entering
LD 31
(See the Option 11C Compact software guide for information on
testing consoles with LD 31.)
If the console fails the test, replace it.
If the console passes the test, go to the next possible cause.
Check the cross-connect terminal to make sure the console is
connected to the correct TNs.
If the console is not connected correctly, fix the wiring.
If the console is connected correctly, go to the next possible
cause.
Make sure wiring is properly connected and wires are not
interchanged, crossed, or grounded
Check the wiring between the console and the cross-connect
terminal
Check the wiring between the Peripheral Equipment shelf and the
cross-connect terminal
If there is a wiring problem, correct it.
January 1999
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